north



(NoModeL) 2 Sheets-Sheet 2.

J. NORTH.

PUMP.

No. 477,569. Patg nted June 21, 1892. r

UNITED STATES PATENT OFFICE.

JOHN NORTILCF SOUTI' IINGTON, CONNECTICUT.

PUMP.

SPECIFICATION forming part of Letters Patent No. 477,569, dated June 21,1892. Application filed April 6, 1892. Serial No. 428,084- (No model.)

To aZZ whom it may concern.-

Be it known that l, JOHN NORTH, a citizen of the United States, residingat Southington, in the county of Hartford and State of Connecticut, haveinvented new and useful Improvements in Pumps, of which the following isa specification.

The object of my invention is to provide a new and improved pump ofsimple and durable construction, eflicient in action, and susceptible offorcing atmospheric air downward in a well or cistern and liberating itat a suitable depth in the Water to prevent the formation therein ofsporadic growths and to preserve the purity and sweetness of the water.

To accomplish this object my invention involves the features ofconstruction and the combination or arrangement of devices hereinafterdescribed and claimed.

To enable others skilled in the art to make, construct, and use my saidinvention, I will proceed to describe the same in detail, referencebeing had to the accompanying drawings, in which Figure 1 is a centrallongitudinal section of a pump-cylinder in which my invention isincorporated. Fig. 2 is a similar view showing a modified form. Fig. 3isan end View partly in section. Figs. 4 and 5 are detail views ofseparated parts.

In the said drawings the reference-numeral 1 indicates the outer barrelor cylinder of the pump, which may be of iron, brass, or other materialsuitable for the purpose. Nithin this outer cylinder is arranged aninterior cylinder 2 of such diameter that an annular water-chargingchamber 3 is formed between its outer cylindrical face and the innerface of the outer cylinder 1. This annular chamber 3 has communicationwith the inner cylinder 2 at the upper end by way of ports 4 in the wallof the inner cylinder, at the upper end of which is a removable diskorhead 5, resting upon an interior shoulder 6. This head is providedwith ports 7, opening into a valve-chamber 8, lying between the upperface of the head 5 and the cap 9, which is bolted upon the end of theoutside cylinder 1. Upon the head 5 rests a valve-ring 10, which closesthe ports 7 against any descending cu rrent of water, thereby preventingescape from the pipe 12, tapped through the cap 9 of the outer cylinder.

At the lower end of the cylinder is a head or disk 13,"its peripherylying between a circular shoulder 14: on the inner face of thecontracted lower end of the outside cylinder 1 and a flange or rib 15 ona cylinder cap or head 16, bolted to and closing the lower end of theoutside cylinder.

Port-s 17 are formed in the disk 13 similar to those in the disk attheopposite end of the cylinder, and these ports are closed by a valve-annulus l8, lying against the inner face of the head or disk 13. Theclosing of this annulus cuts off all access through the lower disk 13 t0the chamber 3. The lower end of the inner cylinder 2 is closed by a head19, having a central boss 20, which rests against the inner face of thedisk 13, thereby forming upon the inner face of the boss 20 anair-chamber 20 into which a short section of tube 2lis tapped centrally.The water-inlet pipe 22 is tapped through the cylinderhead 16, thelength of said pipe being varied, as required, in order to reach thewater and at the same time locate the cylinder belowthe line of frost.Vithin the inlet-pipe is arranged a smaller air-pipe 23, the end ofwhich is tapped through a diam etrical bar 24 on the cylinderhead 16 andlying closely against acentral boss 25 on the disk 13, through which theairpipe section 21 passes, thus giving eommunication between thepipe-section referred to and the pipe 23.

WVithin the inner cylinder 2 is the piston 26, the rod thereof beingtubular, as shown at 28, Fig. 1. The end of this rod is tapped into thecenter of the piston and communicates with an air-chamber, in which liesa puppetvalve 29, seating upon a circular valve-seat 30 in anair-chamber 31, which has free communication with the air-chamber 20.The air-pipe or tubular piston-rod 28 passes up through the disk 5 atthe upper end of the inner cylinder and into the discharge-pipe 12, itsend being tapped into the thimble by which it is connected to the brakeor lever, an air-discharge 32 being provided at this point. The lowerend of the inner cylinder 2 being wholly closed by the head 19, save asto the central air-passage, and the puppetvalve in the piston beingclosed, when the piston descends the whole body of air lying beneath thepiston will be forced through the air-pipe in the head and thence downthrough the air-pipe lying in the inlet-pipe below. The latter pipe isused when the pump is standing above the water-level. By the arrangementthus described it will readily be seen that as'the piston rises the airwill pass down through the tube and into the space beneath the piston.As the latter makes its downward stroke this air will be driven downthrough the air-pipe in the water-inlet and will be discharged into thewell or cistern, its oxygen and the agitation produced serving to keepthe Water pure and preserve its transparency and absence of all color.

I have shown in Fig. 1 the ordinary and preferred form of pump; but Imay substitute therefor the form seen in Fig. 2, in which an auxiliaryor third cylinder 33 is employed, lying parallel to the axes of thecylinders 1 and 2 and connected rigidly with the outer cylinder 1 byintegral portions of metal 34, which form part of the cylinder-heads. Inthis construction the inlet is arranged laterally with reference to thethird cylinder, as seen in Fig. 3, and is placed centrally. The cylinder33 communicates with the annular space between the cylinders 1 and 2 bymeans of a port 35, opening from a valve-chamber 36, in which isarranged a check-valve 36, closing on the upstroke of the pump-piston.The lower end of the third cylinder is closed by a screw-plug 37. Inthis form of pump I also slightly change the construction seen in Fig.1, as the cylinder 2 is closed at its lower end by the cap of the outercylinder 1, in which is turned a central screw-plug 38, into which istapped or screwed the air-pump 23,

which communicates with the air-chamber 40, containing a valve 41 forclosing the port 42 as the piston rises.

What I claim is- 1. The combination of an outer cylinder, an innercylinder arranged therein to provide an intervening Water-chamber andhaving communication at its upper end with the latter, an outletwater-pipe extending from the upper head of the outer cylinder, a valvefor controlling the passage of water from the upper portion of the innercylinder to the outlet water-pipe, a piston arranged in the innercylinder and having an air-chamber, a tubular piston-rod rising from thepiston through the outlet-pipe, a valve located in the airchamber of thepiston for controlling the flow of air from the lower end of the tubularpiston-rod to said air-chamber, a Water-inlet to the outer cylinder, anair-pipe leading from the lower head of the outer cylinder and adaptedto extend downward into the water in the well or cistern, and avalve-chamber containing a valve and interposed between the saidair-pipe and the piston, substantially as and for the purposesdescribed.

2. The combination of an outer cylinder having upper and lower heads, aninner cylinder arranged within the outer cylinder to provide anintervening water-chamber and having ports at its upper end,communicating with the said water-chamber, a water-inlet, awater-outlet, a piston working within the inner cylinder and having atubular piston-rod, a valve for controlling the flow of air from the endof the tubular rod connected to said piston, an air-pipe leading fromthe center of the lower head of the outer cylinder and designed toextend downward in the water of a well or cistern, and suitable valvesarranged at opposite ends of the outer cylinder, substantially asdescribed.

3. The combination, with a pump-cylinder, of an interior concentricshell of such diameter as to leave an annular water-charging chamberoutside said shell, an air-pipe tapped into and communicating with avalved passage in the piston, a valveannulus in a valvechamber at thelower end of the cylinder and closing inlet-ports in the outercylinder-head, an inlet-pipe tapped through the head, an airpipearranged Within the inlet-pipe and having its open end communicatingwith the closed lower end of the inner cylinder, and a valve-annulusupon the tubular piston, seating over ports in the upper end of theinner cylinder, substantially as described.

4. The combination, with a pump-cylinder composed of an inner and outerinclosing shell or cylinder having an annular space between to form awater-charging chamber, of a valve closing the discharge-ports at theupper end of the inner cylinder, a valve opening to the inlet at thelower end of the outer cylinder, a piston having a tubular rod passingup in the discharge-pipe, an air-pipe in the inlet-pipe, and avalve-passage in the piston between the tubular rod, and an air-chambercommunicating with the air-pipe in the inlet, substantially asdescribed.

In testimony whereof I have hereunto set my hand and affixed my seal inpresence of two subscribing witnesses.

' JOHN NORTH. [L. s]

Witnesses:

EPHRAIM H. ANDREWS, MARCUS H. I-IoLooMB.

